Dibenzo-18-crown-6

Synonym(s):Dibenzo-18-crown-6;DB18C6;2,3,11,12-Dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene;6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecene;Crown ether/Dibenzo-18-crown-6

CAS NO.：14187-32-7
Empirical Formula: C20H24O6
Molecular Weight: 360.4
MDL number: MFCD00005098
EINECS: 238-041-3
SAFETY DATA SHEET (SDS)
Update Date: 2025-09-20 20:09:13

What is Dibenzo-18-crown-6?

Chemical properties

white to slightly beige fluffy powder

The Uses of Dibenzo-18-crown-6

Dibenzo-18-crown-6, is used as an important raw material and intermediate used in organic Synthesis, pharmaceuticals, agrochemicals and dyestuff. It is an important organic intermediate.

The Uses of Dibenzo-18-crown-6

Crown ether/Dibenzo-18-crown-6 for synthesis. CAS 14187-32-7, molar mass 360.41 g/mol.

Definition

ChEBI: Dibenzo-18-crown-6 is a crown ether that is 18-crown-6 ortho-fused to two benzene rings at positions 8-9 and 17-18. It has a role as a phase-transfer catalyst. It is a member of benzenes and a crown ether.

Purification Methods

Crystallise it from *benzene, n-heptane or toluene and dry it under vacuum at room temperature for several days. [Szezygiel J Phys Chem 91 1252 1987, V.gtle ed. Top Corr Chem (Host Guest Complex Chemistry) 98 1981.]

Properties of Dibenzo-18-crown-6

Melting point:	162-164 °C (lit.)
Boiling point:	380-384 °C (679 mmHg)
Density	1.1801 (rough estimate)
refractive index	1.5200 (estimate)
Flash point:	380-384°C/679mm
storage temp.	Store below +30°C.
solubility	0.007g/l
form	Fluffy Powder
color	White to slightly beige
Water Solubility	sparingly soluble
Sensitive	air sensitive
λmax	277nm(CH2Cl2)(lit.)
Merck	14,2602
BRN	1162153
CAS DataBase Reference	14187-32-7(CAS DataBase Reference)
NIST Chemistry Reference	Dibenzo-18-crown-6(14187-32-7)
EPA Substance Registry System	Dibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecin, 6,7,9,10,17,18,20,21-octahydro- (14187-32-7)

Safety information for Dibenzo-18-crown-6

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up.